ABC has ordered a full second season of its U.S. crime dramedy, "Castle," starring Stana Katic and Nathan Fillion, sources told TVGuide.com.
Katic plays a New York City police detective in the series, while Fillion protrays a mystery novelist. They work together to solve crimes.
TVGuide.com said the show is averaging between 9 million and 10 million viewers a week.